Paul Harris, executive head teacher told Channel 4 News: ‘We have children who are facing homelessness, seeing things they shouldn’t have seen, using social media has opened up a whole new world to them.

‘We’ve also got children who are really concerned regarding things like Brexit and things that are in the media.’

Pupil Maggie Fagbohun said: ‘I don’t like it when adults say you can’t be stressed you’re too young. A lot of things are happening like tests and it can get stressful and overwhelming.’

Theresa May announced schools will receive mental health training, but not primary schools (Picture: Getty Images)

The study by mental health charity, Place2Be, found that one in three children in a classroom will have a mental health condition.

But 97% of teachers told researchers mental health among pupils was still underestimated.

Catherine Roche, Chief Executive of Place2Be said: ‘Our evidence shows that making support accessible to children from a young age can have a hugely beneficial impact on their wellbeing, and also reduces the burden on teachers so they can focus on learning. Both primary and secondary schools need to be able to access this support.’

What else did the study find?

More than half (56%) of school leaders say it is difficult to find mental health services for pupils.

More than one in five (22%) who attempt to find support are unsuccessful.

93% say that pupils bring more worries into school than they did five years ago.

The most common barriers when seeking support at schools were down to a lack of capacity in services (36%), lack of local services (31%) and budget constraints (28%).